From: Harry Wentland <harry.wentland@amd.com>
Date: Tue, 19 Dec 2017 16:17:22 -0500
Subject: drm/amd/display: Don't allow dual-link DVI on all ASICs.
Git-commit: 6724eebac4c45741334bc459296cdddb59904a36
Patch-mainline: v4.16-rc5
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
Our APUs (Carrizo, Stoney, Raven) don't support it.
v2: Don't use is_apu as other ASICs might also not support it
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/amd/display/dc/core/dc_stream.c | 5 +++--
drivers/gpu/drm/amd/display/dc/dc.h | 1 +
drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c | 1 +
drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c | 2 ++
drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c | 2 ++
drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c | 1 +
6 files changed, 10 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_stream.c
@@ -45,8 +45,9 @@ static void update_stream_signal(struct
stream->signal = dc_sink->sink_signal;
if (dc_is_dvi_signal(stream->signal)) {
- if (stream->timing.pix_clk_khz > TMDS_MAX_PIXEL_CLOCK_IN_KHZ_UPMOST &&
- stream->sink->sink_signal != SIGNAL_TYPE_DVI_SINGLE_LINK)
+ if (stream->ctx->dc->caps.dual_link_dvi &&
+ stream->timing.pix_clk_khz > TMDS_MAX_PIXEL_CLOCK_IN_KHZ_UPMOST &&
+ stream->sink->sink_signal != SIGNAL_TYPE_DVI_SINGLE_LINK)
stream->signal = SIGNAL_TYPE_DVI_DUAL_LINK;
else
stream->signal = SIGNAL_TYPE_DVI_SINGLE_LINK;
--- a/drivers/gpu/drm/amd/display/dc/dc.h
+++ b/drivers/gpu/drm/amd/display/dc/dc.h
@@ -62,6 +62,7 @@ struct dc_caps {
bool dcc_const_color;
bool dynamic_audio;
bool is_apu;
+ bool dual_link_dvi;
};
struct dc_dcc_surface_param {
--- a/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce100/dce100_resource.c
@@ -852,6 +852,7 @@ static bool construct(
dc->caps.max_downscale_ratio = 200;
dc->caps.i2c_speed_in_khz = 40;
dc->caps.max_cursor_size = 128;
+ dc->caps.dual_link_dvi = true;
for (i = 0; i < pool->base.pipe_count; i++) {
pool->base.timing_generators[i] =
--- a/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce112/dce112_resource.c
@@ -1103,6 +1103,8 @@ static bool construct(
dc->caps.max_downscale_ratio = 200;
dc->caps.i2c_speed_in_khz = 100;
dc->caps.max_cursor_size = 128;
+ dc->caps.dual_link_dvi = true;
+
/*************************************************
* Create resources *
--- a/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce120/dce120_resource.c
@@ -835,6 +835,8 @@ static bool construct(
dc->caps.max_downscale_ratio = 200;
dc->caps.i2c_speed_in_khz = 100;
dc->caps.max_cursor_size = 128;
+ dc->caps.dual_link_dvi = true;
+
dc->debug = debug_defaults;
/*************************************************
--- a/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/dce80/dce80_resource.c
@@ -793,6 +793,7 @@ static bool dce80_construct(
dc->caps.max_downscale_ratio = 200;
dc->caps.i2c_speed_in_khz = 40;
dc->caps.max_cursor_size = 128;
+ dc->caps.dual_link_dvi = true;
/*************************************************
* Create resources *